Patents by Inventor Edward C. Grauer

Edward C. Grauer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4216633
    Abstract: A lifting apparatus for elevating folding roof sections comprises a pair of jackknifing lifting bars. A hoist means transmits a pulling force to the bars, thereby enabling each bar to unfold from a initial folded configuration into an extended straight configuration. The bars elevate first roof sections to an intermediate pitch while unfolding into the straight configuration and while rotating into a generally vertical position with respect to the first roof sections. Remaining roof sections, together with the first roof sections, are elevated to a desired pitch with the bars in the straight configuration by applying additional force. Additional force causes the bars to rotate from the vertical position into a generally horizontal position while lifting both first and second roof sections to the desired pitch. At the start of the lift, all roof sections are horizontally folded and substantially supported on first segments of hinge plates fastened thereto.
    Type: Grant
    Filed: May 11, 1978
    Date of Patent: August 12, 1980
    Assignee: General Electric Company
    Inventors: Edward C. Grauer, William H. Kennedy